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Lease Extension and Building Surveys: What Leaseholders Need

How building surveys support the lease extension process and protect leaseholders.

Guidance NoteApril 2026Residential
Overview

Surveys in the lease extension context

For leaseholders considering an extension, understanding condition is important. A condition survey identifies issues affecting the lease value and future liabilities.

Why condition matters

Building condition directly affects lease extension cost. Significant repair liabilities generate higher service charges or diminished value.

What a survey reveals

A survey of common parts identifies deferred maintenance, structural defects, damp, fire safety gaps and components approaching end of life.

Supporting the valuation

Building condition is relevant to the extension premium. Evidence of defects can affect the relativity calculation and support a lower premium.

Common issues

Unexpected major works contributions after extending, inadequate reserves, ongoing structural problems and fire safety costs.

FAQ

Frequently asked questions

Do I need a survey before extending?

Not legally required but strongly recommended to reveal condition issues and potential liabilities.

Can defects reduce the premium?

Yes. Evidence of significant defects is a relevant valuation factor.

What if major works are planned after?

You will be liable for your share. A survey helps you budget.

Survey the flat or the whole building?

Both ideally. Flat survey covers your demise; building survey covers wider liabilities.

Next Steps

How we can help